DC fault ride-through method for full-bridge MMC-based MTDC systems
| Autor: | Yongjie Luo, Pu Yi, Xiong Xiaofu, Wang Jiang, Song Yonghui |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
power grids
HVDC power transmission power transmission faults HVDC power convertors voltage-source convertors power transmission protection short-circuit currents fault currents DC fault protection multiterminal voltage source converter high-voltage direct current VSC–MTDC DC short-circuit fault ride-through full-bridge modular multilevel converter based MTDC systems FB-MMC topology fault current clearing full-bridge sub-module FB-SM converter protection control strategy system protection scheme quick fault current elimination protection strategy full-bridge MMC-based MTDC systems high-voltage direct current transmission systems DC short-circuit fault ride-through method simulation model Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2019) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 |
| DOI: | 10.1049/joe.2018.8423 |
| Popis: | The DC fault protection is one of the main issues in multi-terminal voltage source converter based high-voltage direct current (VSC–MTDC) transmission systems. In this study, a DC short-circuit fault ride-through method for full-bridge modular multi-level converter (FB-MMC) based MTDC systems is proposed. First, the model of the FB-MMC topology is analysed. Then, the principle of fault current clearing in full-bridge sub-module (FB-SM) is introduced. The converter protection control strategy and the system protection scheme are proposed, benefitting from the capability of quick fault current elimination with the valves blocked using the FB-MMC topology. With this method, the MTDC system could restart quickly after clearance of DC fault without cutting off the AC grid. The proposed protection strategy is demonstrated using the simulation model in PSCAD/EMTDC. Simulation results verify the feasibility and effectiveness of the strategy. |
| Databáze: | Directory of Open Access Journals |
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